php - Find records in array in time range -


i'm adding account-spamming security registration script.

the aim script reject user creating new account if on 10 accounts in database match ip address, , these ten accounts made in last hour.

this allow people in library, instance, create accounts, whilst preventing people spamming accounts in our database.

i have following code, how check if 10 or more accounts made in last 1 hour?

if($count_existscheck==1) {     echo 'account exists.';     exit(); } if($count_existscheck==0) {     // begin check ips     $ip = $_server['remote_addr'];     $sql_ipcheck = "select * members ip='$ip'";     $result_ipcheck = mysql_query($sql_ipcheck);     $count_ipcheck = mysql_num_rows($result_ipcheck);      // if count =10 or >10, check if in last hour     if($count_ipcheck>9) {         $row_ipcheck = mysql_fetch_assoc($result_ipcheck);     } }

try this:

$onehourbefore = strtotime('-1 hour'); $sql_ipcheck = "select * members           ip = '$ip' , lastregistration > $onehourbefore; $result_ipcheck = mysql_query($sql_ipcheck);  if(mysql_num_rows($result_ipcheck)>=10) echo 'access denied';

you should have column in tha members table called 'lastregistration' store time of registrations in unix timestamp.

(and should check time of mysql server , time of webserver. , should use mysqli_query() not mysql_query() ... )


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